Device for lasting boots and shoes



' A. DAVIDSUN.

Device for Lasting Boots and Shoes.

No. 225,806. PatentedMari 23,1880.

v c KWWWM g Q I 127W expeditious and effective; and

UNITED STATES PATENT 0FFICE@ ALEXANDER DAVIDSON, OF LAMIRA, OHIO.

DEVICE FOR LASTI NG.BO OTS AND SHOES.

SPECIFICATION forming part of Letters Patent No. 225,806, dated March 23, 1880.

Application filed February 14, 1880.

To all whom it may concern:

Be it known that I, ALEXANDER DAVID- SON, of .Lamira, in the county of Belmont and State of Ohio, have invented certain new and useful Improvements in Devices for Lasting Boots and Shoes; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specification, in which- Figure 1 is a perspective View of my invention, and Fig. 2 is a central vertical section.

The object of my invention is to supply a much-needed device by which the lasting of boots and shoes, in the process of manufacturing the same by hand, may be rendered more to this end it consists in the peculiar construction and arrangement of the auxiliary jaws whereby increased leverage is obtained upon both, and one is kept in readiness to receive the shank automatically as it were, without previous preparation or adjustment.

To enable others skilled in the art to make and use my invention, I will now describe more particularly its construction and operation.

AB represent the main jaws, which, like the instep-laster in ordinary use, are cast or formed curved, so that when the two parts are pivoted together at their lower ends and closed at top an oval space will be formed between them.

The jaws of my instep-laster are slotted and otherwise formed as fully shown in Fig. 1.

0 represents one of the auxiliary jaws, so constructed or formed that its upper and inner end willbiteclosely upon or against the corresponding part of main jaw A and also in such a manner that it curves outward just under its mouth, and extends downward on the opposite side of the slot in jaw A, almost to the bottom of said slot. It is further provided with anoval-shaped hole, around which is the flange or projection a. This jaw is pivoted to the sides of the slot in jaw A, as seen in Fig. 1.

1) represents a flat spring securely fastened to the inner and lower end of jaw A, and so bent or formed as to admit of its upper end resting against the inner side of auxiliary jaw O, for the purpose of quickly opening the month formed by the upper ends of jaws A O and keeping it in readiness to bite upon the leather when inserted therein.

D represents the other auxiliary jaw, having its lower end slotted, in which slot is pivoted the screw-rod E. This rod extends through the oval hole in auxiliary jaw G, and is we vided with the screw-crank F. The jaw D is likewise pivoted in the slot in jaw B on the same line in which jaw C is pivoted to jaw A.

I am well aware that the general features of my instep-laster are not newthat is to say,

I know full well that the main jaws having movable auxiliary jaws operating in connection therewith are seen in the instep-laster in ordinary use. I therefore disclaim these features in a broad sense. All thatI have done is simply to improve the construction and arrangement of these parts, whereby the work of the boot and shoe maker may be more easily and expeditiously accomplished than with the now Well-known instep-laster.

What I therefore desire to secure by Letters Patent is In a boot or shoe lasting device, the combination of main jaws A B, slot-ted and pi"- oted together at their lower ends, as set forth, with auxiliary jaws O D, screw-shaft E, crank F, and spring I), the screw-shaft being pivoted to auxiliary jaw D and passing loosely through jaw 0, all as and for the purposes described.

In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

ALEXANDER DAVIDSON. 

